TOUCH-SENSING ELECTRODE STRUCTURE AND METHOD OF MANUFACTURING THE SAME

• US 20140131069A1
• Filed: 11/07/2013
• Published: 05/15/2014
• Est. Priority Date: 11/09/2012
• Status: Active Grant

• Current Assignee: TPK Glass Solutions (Xiamen), Inc. (TPK Holding Co., Ltd.)
• Original Assignee: Tpk Touch Systems (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Inventors: Chang, Chen-Hsin, Zhong, Bin, Wang, Fuding, Chen, Lixian, Fei, Zhenjun
• Granted Patent: US 10,039,181 B2
• Time in Patent Office: Days
• US Class Current: 174/251
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: H05K 1/0213 Electrical arrangements not otherwise provided for
• CPC Class Codes: H05K 2201/0326 Inorganic, non-metallic conductor, e.g. indium-tin oxide [ITO]
• CPC Class Codes: H05K 2201/10128 Display
• CPC Class Codes: H05K 3/40 Forming printed elements for providing electric connections to or between printed circuits

Abstract

The present disclosure provides a touch-sensing electrode structure, which includes a plurality of touch-sensing electrodes. Each of the touch-sensing electrodes includes a main body and a connecting portion connected to an end of the main body; wherein the width of the connecting portion is not less than a half width of the end of the main body. The touch-sensing electrode structure also includes a plurality of signal-transmitting wires, each of which includes a head portion and a tail wire connected to the head portion. The head portions of the signal-transmitting wires is superimposed on the connecting portions and electrically connected to the connecting portions respectively. Furthermore, a method of manufacturing the above touch-sensing electrode structure is also provided.

Claims

1. A touch-sensing electrode structure, comprising:

a sensing electrode having a main body and a connecting portion connected to the end of the main body, wherein the width of the connecting portion is larger than or equal to half the width of the end of the main body; and

a signal-transmitting wire having a head portion and a tail wire connected to the head portion, wherein the head portion of the signal-transmitting wire is superimposingly disposed on and electrically connected to the connecting portion of the sensing electrode.

2. The touch-sensing electrode structure according to claim 1, wherein the shape of the connecting portion is rectangle or trapezoid.

3. The touch-sensing electrode structure according to claim 1, wherein the width of the connecting portion is equal to half the width of the end of the main body.

4. The touch-sensing electrode structure according to claim 3, wherein the connecting portion is positioned at a central position of the end of the main body.

5. The touch-sensing electrode structure according to claim 3, wherein the connecting portion is positioned at a side of the end of the main body.

6. The touch-sensing electrode structure according to claim 3, wherein the head portion of the signal-transmitting wire completely covers the connecting portion.

7. The touch-sensing electrode structure according to claim 1, wherein the width of the connecting portion is equal to the width of the end of the main body.

8. The touch-sensing electrode structure according to claim 7, wherein the head portion of the signal-transmitting wire covers part of the connecting portion.

9. The touch-sensing electrode structure according to claim 8, wherein the head portion of the signal-transmitting wire is superimposingly disposed on the center of the connecting portion.

10. The touch-sensing electrode structure according to claim 8, wherein the head portion of the signal-transmitting wire is superimposingly disposed on a side of the connecting portion.

11. The touch-sensing electrode structure according to claim 7, wherein the head portion of the signal-transmitting wire completely covers the connecting portion.

12. The touch-sensing electrode structure according to claim 1, wherein the connecting portion has a first edge contacted with the end of the main body and a second edge distant from the end of the main body, and the distance between the first edge and the second edge is between 0.02 millimeters and 0.4 millimeters.

13. The touch-sensing electrode structure according to claim 1, wherein the touch-sensing electrode structure is disposed on a substrate.

14. The touch-sensing electrode structure according to claim 13, further comprising a mask layer disposed within the peripheral region and sandwiched between the substrate and the touch-sensing electrode.

15. A method of manufacturing a touch-sensing electrode structure, comprising the following steps:

forming a sensing electrode having a main body and a connecting portion connected to the end of the main body, wherein the width of the connecting portion is larger than or equal to half the width of the end of the main body; and

forming a signal-transmitting wire having a head portion and a tail wire connected to the head portion, wherein the head portion of the signal-transmitting wire is superimposingly disposed on and electrically connected to the connecting portion of the sensing electrode.

16. The method of manufacturing a touch-sensing electrode structure according to claim 15, wherein the connecting portion is rectangular or trapezoidal.

17. The method of manufacturing a touch-sensing electrode structure according to claim 15, wherein the width of the connecting portion is equal to half the width of the end of the main body.

18. The method of manufacturing a touch-sensing electrode structure according to claim 17, wherein the connecting portion is positioned at a central position of the end of the main body.

19. The method of manufacturing a touch-sensing electrode structure according to claim 17, wherein the connecting portion is positioned at a side of the end of the main body.

20. The method of manufacturing a touch-sensing electrode structure according to claim 17, wherein the head portion of the signal-transmitting wire completely covers the connecting portion.

21. The method of manufacturing a touch-sensing electrode structure according to claim 15, wherein the width of the connecting portion is equal to the width of the end of the main body.

22. The method of manufacturing a touch-sensing electrode structure according to claim 21, wherein the head portion of the signal-transmitting wire covers part of the connecting portion.

23. The method of manufacturing a touch-sensing electrode structure according to claim 22, wherein the head portion of the signal-transmitting wire is superimposingly disposed on the center of the connecting portion.

24. The method of manufacturing a touch-sensing electrode structure according to claim 22, wherein the head portion of the signal-transmitting wire is superimposingly disposed on a side of the connecting portion.

25. The method of manufacturing a touch-sensing electrode structure according to claim 21, wherein the head portion of the signal-transmitting wire completely covers the connecting portion.

26. The method of manufacturing a touch-sensing electrode structure according to claim 15, wherein the connecting portion has a first edge contacted with the end of the main body and a second edge distant from the end of the main body, and the distance between the first edge and the second edge is between 0.02 millimeter and 0.4 millimeter.

27. The method of manufacturing a touch-sensing electrode structure according to claim 15, further comprising the following step:

forming the touch-sensing electrode structure on a substrate.

28. The method of manufacturing a touch-sensing electrode structure according to claim 15, further comprising the following step:

forming a mask layer disposed within the peripheral region and sandwiched between the substrate and the touch-sensing electrode.